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https://issues.apache.org/jira/browse/LENS-1459?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16128628#comment-16128628
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Rajat Khandelwal commented on LENS-1459:
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Small enough diff. Attaching directly
> Time union candidate creation phase is creating a combination with redundant
> candidates
> ---------------------------------------------------------------------------------------
>
> Key: LENS-1459
> URL: https://issues.apache.org/jira/browse/LENS-1459
> Project: Apache Lens
> Issue Type: Bug
> Components: cube
> Reporter: Rajat Khandelwal
> Assignee: Rajat Khandelwal
> Attachments: LENS-1459.2017-08-16_16:28:29.patch
>
>
> After the optimization in LENS-1452, Combinations as mentioned in the jira
> summary can get created. Say the time range queried is {{\[f, t)}}, Candidate
> {{a}} and {{b}} can cover {{\[f, m)}} and candidate {{c}} can cover {{\[m,
> t)}}. Say a Union candidate is represented as {{U(cand1, cand2,...)}}. Then
> the code creates {{U(a,b,c), U(a,c) and U(b,c)}}. If {{U(a,b,c)}} is picked
> as final candidate, then one of {{a}} or {{b}} doesn't resolve partitions and
> {{time_range_in}} clause is left as it is for that.
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